It is only a metre wide, barely enough for a person to walk with confidence, and it was built not from stone or gravel but from the thin, flexible stems of hazel and alder. This is a togher, an ancient trackway laid across waterlogged or boggy ground to allow passage where the earth could not otherwise bear weight. The technique involved weaving or laying brushwood, both across and along the line of travel, to create a surface stable enough to walk on. Without the preserving chemistry of the bog, such a structure would have rotted away entirely.

The Derrylough togher runs east to west and is classified as a class 3 example, meaning it belongs to a broader typology of Irish bog roads distinguished by their construction methods and materials. This particular one was built from brushwood with an average diameter of roughly three and a half centimetres, the kind of thin, manageable stems that could be cut and laid relatively quickly. A single worked peg was also recovered, a small but telling detail: it suggests the structure was pinned or secured in some deliberate way, hinting at the care taken to keep the surface from shifting underfoot. The hazel and alder used are both species well suited to wet conditions and commonly found beside the kinds of margins, fens, and lake edges where toghers were most needed.